1.

The dimensional formula for magnetic flux isA. `[phi]=[M^(2)L^(1)T^(-2)A^(-1)]`B. `[phi]=[M^(1)L^(2)T^(-2)A^(-1)]`C. `[phi]=[M^(1)L^(-1)T^(2)A^(1)]`D. `[phi]=[M^(1)L^(2)T^(2)A^(-1)]`

Answer» Correct Answer - B
`phi = BA and R = BIl`
`:. [B] = [(F)/(Il)]=[(M^(1)L^(1)T^(-2))/(A^(1)L^(1))] = [M^(1)L^(0)T^(-2)A^(-1)]`
`:. [phi] = [BA] = [M^(1)L^(0)T^(-2)A^(-1)xxL^(2)] = [M^(1)L^(2)T^(-2)A^(-1)]`.


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